Malicious PDF — malware analysis report

Static analysis result for SHA-256 2943d11d9e550c43…

MALICIOUS

PDF

68.3 KB Created: 2021-03-10 07:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aeffe85e00ebcfb08ad7be4f5cc68500 SHA-1: 798388e9adfb12eeac269a62ac7a77a6d7bb66f7 SHA-256: 2943d11d9e550c4360f4d663617f8883c759d84de7001bd9172eef8a2647df96
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://midufefew.ru/wix?keyword=seasons+worksheets+for+grade+1 PDF link annotation
    • https://rexirarilabe.weebly.com/uploads/1/3/2/6/132681411/7801930.pdfIn PDF document text
    • https://cdn.sqhk.co/bibolaned/4aahhUX/master_guns_approved.pdfIn PDF document text
    • https://siduwetatipapi.weebly.com/uploads/1/3/4/3/134318549/4013944.pdfIn PDF document text
    • https://kuwuxegizeduki.weebly.com/uploads/1/3/2/6/132695805/puvusiriwul.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/he4zJia/36882866194.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/e90Xajh/92475656823.pdfIn PDF document text
    • https://cdn.sqhk.co/mepetiruzi/fPjhid0/gay_sugar_daddy_dating_apps_uk_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vudupapuj/iIl3hjh/melodyne_essential_polyphonic.pdfIn PDF document text
    • https://vafarisitoguv.weebly.com/uploads/1/3/0/8/130874489/rusolaxasobude_tifupujejo_supalepifimoxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/metal_gear_solid_5_quiet_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b7b034-471d-4356-909b-672d089fa2a3/how_to_edit_interior_design_photos_in_photoshop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9bdbeaa-f8ca-4e0c-bb3a-cab466d3ee06/88053726177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99b4cb0f-5553-4724-8781-724308c6a6f0/33122074825.pdfIn PDF document text
    • http://kelajerifa.epizy.com/tigoxajunij.pdfIn PDF document text
    • http://jofawapedoguw.rf.gd/aml_treatment_nice_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/zelusimipipabinoxuta.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0F 5448 bytes
SHA-256: d3b48e7d210cf68ed25377731efbe21c9dea7e2b7278b60000d6425b554d939c
font_01_sfnt_off0000e1a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A8 10132 bytes
SHA-256: a7e73a12a12b406653f11094e191bbb51138b2f9ba153967a826d6d6112c3ec0